What is the thing that one coworker does that irritates you every time?

Breathes

Showing up for work.

This was a few years ago but a coworker friend would come to my place for drinks and he would steal my stuff. I never really noticed till I went to his place one time and spotted all the things that were mine. When I asked him why he has so much of my stuff he said I gave it to him when I was drunk.
Bull! I never let him come back to my place again. .

I worked with a woman who hummed all day long.  It was a constant, monotone hummmmmmmm!  She didn't even know she was doing it ... just mindless drone.  We had music playing and she didn't even hum to that .. ARGH!

talks to me. I just want everyone to shut up so I can think in my own little world. I really don't care about your life. :0|